Electric heating plant



Oct. 20; 1931. E PROVENCAL 1,828,294

ELECTRIC HEATING PLANT Filed March 31, 1930 2 Sheets-Sheet l ."LE-l INis I.

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Oct. 20, 1931. E; PROVENCAL ELECTRIC HEATING PLANT Filed March 51, 19302 Sheets-Sheet 2 BY 6, 9, BM L HTTO/P/VZK Patented Oct. 20, 1931 r1,828,294

UNITED STATES PATENT OFFICE ELPHEGE PROVENCAL, OFST. HYA CINTHE, QUEBEC,CANADA nnnc'rmcnm'rmo PLANT Application filed latch 81, 1930. Serial No.440,548.

The invention relates to an electric heat water inlet 18 connected to aradiating sysing plant, as described in the present specitern throughthe return pipe 19, the exhaust fication and illustrated in theaccompanying outlet 20 connected to a drain pipe 21, the drawingsthat'forrn part of the same. feed water outlet 22 adjacent to the high1* The invention consists essentially in diwater level of the tank andconnected to the rooting the heating fluid through heated en outletfeedpipe 23, and the bottom feed outclosures in divided quantities andsuperheatlet 24connected to the lower outlet feed pipe ing in passage aspointed out in'each claim 25. I p I for novelty following a descriptionin detail The tank 15 preferably stands on the legs of an acceptableconstruction. a I I 26 and carries the water gauge 27. I

The objects of the invention are to furnish The cold water inlet pipe 17forms at its to the public an economical heating system discharge endwithin the tank a seat for the whereby hard fuel and liquid fuel maybevalve 28, and this valve 28 is connected to a readily dispensed with andyet maintain the valve gear 29 whichis operated by the fioat system at amoderate cost to the consumer; 30, this being a very well known means of55, to insure convenience and flexibility in remaintaining the water ata predetermined gard to the operation of the plan as well as level inthe tank 15. safety in respect to the continued use of the The handoperated valve 31 is introduced heating system during the absence of theatin the drain pipe 21, while the hand operated V tcndant; to eliminatenoise, dirt and dust, unvalve 32 is introduced in the outlet feed pipe7Q pleasant smells and noxious and unhealthy between the outlet 24 andthe junction of gases; to avoid interference with radio rethe outletfeed pipe 23 and the outlet feed ceiving apparatus; and generally toprovide pige 25.

H a heating system which will be very reliable he electric oven 33stands on the feet 34 r and free from complicated mechanisms, and andhas the insulated walls 35 and within this at the same time be producedand maintained oven 33, the inlet water manifold 36 is inat a moderatecost. I v stalled and directly connected to the inlet In the drawings,Figure 1 is a sectional pipe 37 extending from the junction of the Iside elevational view of thecomplete heating feed pipes 23 and 25. p Y

plant. a The battery of heating tubes 38 preferably Figure 2 is a crosssectional view on the of copper extend upwardly from the correline 2-2in Figure 1. sponding outlet ports in the manifold 36, as

Figure 3 is a cross sectional viewron the many, as may be comfortablycontained across r line 3-3 in Figure 1. the oven, and these tubes 38extend upwardly Figure 4 is a cross sectional view on the adjacent tothe top'of the oven and thereline 44 in Figure 1. along for the greaterpart of the length of Figure 5 is a sectional plan view'of the the oven,being turned downwardly at 39 plant. a r and slightly rearwardly towithin superheat- Figure 6 is an enlarged detail of the autoing distanceof the electric element 10 which matic valve operating mechanism showingis supported on the bottom of the oven 33, the same in elevation. thiselement having a key 41 operated by suit- Figure 7 is a sectional detailof the valve able thermostat. 7 operating mechanism. a The tubes 38extend over the element 40 I, Like numerals of reference indicatecorrein a forward direction to the outlet manifold V sponding parts inthe various figures. 42 entering corresponding inlets in said out-Referring to the drawings, the numeral 15 let manifold and by this timeany water indicates the feed water tank which is conwhich has not beengenerated into steam structed with a cold water inlet 16 having willquickly vaporize and pass out through v the inlet pipe projectingtherethrough conthe outlet pipe 43 and to the steam chest if nected to asource of supply and the return desired, but it is preferable tosuperheat the i to steam thus generated, and therefore a larger oven 44is furnished having the insulated walls 45.

The outlet pipe 48 extends into the oven 44, and within said ovencarries inlet manifold 46 from which the battery of tubes preferably ofcopper extend upwardly, these tubes 47 being of slightly greaterdiameter than the tubes 38.

The tubes extend upwardly adjacent to the top of the oven 44 andtherealong to the downward turn 48 and from this downward turn 48 thetubes extend in a rearward direction within heating distance of theelectric element 49 which is operated by the key 50 preferably bythermostatic operation.

The tubes 47 extend along over the element 49 and enter correspondingorifices in the manifold 51 and from this manifold the riser pipe 52extends upwardly and out wardly through the wall of the oven 44 into thesteam chest or reservoir 53 from which a delivery pipe 54 extends to theradiator system, the chest standing on the legs 55 and having the draincock 56, for the condensation water from the steam.

The drain pipe 57 extends from the outlet manifold 51 to the tankforming the reservoir 53, consequently any condensation that may occurin the system on reaching the outlet manifold 51 will flow into the tank53, which may be relieved by opening the drain cock 56.

The drain pipe 58 also leads from the outlet manifold 51 to the valvecasing 59 and the drain pipe 60 leads from the inlet valve manifold 46to the valve casing 59 which is relieved by turning the cock 61.

The drain pipe 62 leads from the inlet water manifold 36 and the drainpipe 63 leads from the outlet water manifold 42and both these pipes 62and 63 lead to the valve casing 64 which is relieved by-operating thecock 65. 7

Therefore all condensates may be removed and the system kept free fromwater during the operation when the invention is utilized as a steamsystem, but when it is used as a hot water system, the air may berelieved in the same manner. and if used as a hot air system, the samerelief valves will be usedto promote the circulation of the air or aconstruction of a somewhat similar nature.

The numeral 66 indicates a thermostat of conventional pattern, and notdescribed in detail herein and having the usual connecting rod 67customarily applied to a damper, but in this case operatively connectingthe thermostat moving parts to a valve stem crank handle 68 operating avalve 69 in the outlet feed pipe 23.

The operating connection from the thermo stat rod 67 to the crank handle68 is through an air cushioned telescopically. mounted cylinder 7 0 andhaving the air outlet 71 and slots tively weak tends to keep thecylinder in 1 its outward normal position during the flow of the waterfrom the feed water tank to and through the batteries of tubes, but whenit is predetermined that the heat shall not rise above a certaintemperature, then the thermostat operates and moves the cylinderinwardly through its rod connection 67 in said cylinder.

The inward movement of the cylinder 70 closes the ports 72 andcompresses the air between the cylinder end and the piston head.

So soon as the cylinder has reached its inward position, the latch 78 atthe end of the spring-held bar 79 is operated by the spring 80 and snapsover the end of the cylinder 70 and holds it downwardly.

The valve 69 is now closed and the water shut off and it is only whenthe thermostat releases the latch 78 that the cylinder 70 St-flltS toregain its outward position, but this is not regained by any means in aninstant for the cylinder travels outwardly very slowly therefore thewater begins to trickle into the inlet manifold and the battery oftubes, consequently the water before reaching any volume is very hot andhas begun to steam, thus each battery of tubes in the first and secondovens becomes a form of flash boiler and this is particularly emphasizedin the second oven where really the steam is superheated and be comespractically dry steam, of course there is always the liability ofcondensai'i-ion, but the condensates may be relieved from the system atseveral places.

The thermometer 81 is connected with the oven 33, the thermometer 82with the oven 44 and the thermometer 8-3 with the steam chest orreservoir tank 53, therefore the temperatures of these receptacles arefully and con stantly indicated and always within view of the attendantof the plant.

In the operation of the invention, the cold water is fed in through thecold water pipe until the predeterminedlevel reached, this level beingcontrolled by the float operated valve.

In the first place the feed water pipe to the oven equipment is broughtinto communication with the first oven by turning the valve slightlyeither above or below so that the water just trickles in the two ovenspreviously heated by the electrical element".

The small trickle of water heats very 1 pidly within the first oven andrises through the battery of tubes and by the time it has reached andpassed the electric element in the first oven, the water has mostlyvaporized and become steam.

The steam and water or the steam only,

if the oven is very hot, passes through the number two. In any case thesteam rising into the steam chest tank or reservoir tank, as it may becalled, passes out through the outlet pipe to the circulatory system 84and back again through the system as customary in heating systems tothereturn pipe in the feed water tank.

This circulation continuing the water in the system becomes quite hot,and it will be noticed that this hot water returning to the feed watertank is drawn very close to the upper level and returned through theovens, of course going through the circulatory system 84, it has cooledto some extent, but when it gets too hot the excess temperature isreduced by the operation of the thermostat which closes off the feedwater tank and leaves the water as it stands in the system until thewhole system cools sufficiently for it to start again.

This is all done automatically, naturally it may be done by hand if itis desired, but it is much better for the temperature in any building tobe taken care of according to the needs of the occupants.

What I claim is:

1. In an electric heating plant, a feed water pipe suitably connected toa supply, a cylinder and a piston head, forming an air dash pot andsupported on a bracket extending from said pipe and comprising aspring-held cylinder having an open air hole therethrough and springheld from the piston head, a latch spring-held to said cylinder andadapted to snap thereover in the inner position of said cylinder, athermostatic device having connections operating said cylinder and saidlatch, an electric oven having water passages therethrough having acommon connection to said feed water pipe, and a common outlet memberand a circulatory heat radiating system connected to said common wateroutlet.

2. In an electric heating plant, a feed water tank having a feed waterpipe therefrom, an electric oven containing an electric heating element,manifolds forming the common inlet member and a common outlet member, abattery of hot water tubes extending upwardly from said inlet manifoldalong and downwardly to said heating element and along to the outletmanifold, an outlet pipe from said outlet manifold, a second oven havingan inlet for said outlet pipe from the first oven, manifolds in thesecond oven formin common inlet and outlet members, tubes 0 largerdimensions extending up in a battery from the common inlet member in thesecond oven and along and downwardly and along to the common outletmanifold, an electric element under said tubes adjacent to said outletmanifold, a riser from the outlet manifold in the second oven andconnected with an outlet pipe through the wall of the second oven, and asteam reservoir tank having a fluid outlet pipe and a circulatory heatradiating system connected to said fluid outlet pipe and terminating ina return pipe to said feed water tank. I

3. In an electric heating plant, a feed water tank having a water outletpipe therefrom, an electric oven containing an electric element andhaving inlet and outlet manifolds, and a battery of hot water tubestherebetween, drain pipes from said manifolds to a common valve casingforming a drain cock, a second oven having inlet and outlet manifoldsconnected to the water passages through the first oven and having hotwater tubes therebetween, and a riser pipe from the outlet manifold, asteam chest or reservoir tank connected to said riser pipe, drain pipesfrom the inlet and outlet manifolds in the second oven leading to avalve casing form-

